/*
 *   This file is part of <open-parametrics>
 *   Copyright (c) 2006-2008 Miguel-Angel Sicilia
 *
 *   open-parametrics is free software: you can redistribute it and/or modify
 *   it under the terms of the Lesser GNU General Public License as
 *   published by the Free Software Foundation, either version 3 of
 *   the License, or (at your option) any later version.
 *
 *   open-parametrics is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with open-parametrics.  If not, see <http://www.gnu.org/licenses/>.
 */

package es.uah.cc.ie.parametrics.regress;

import es.uah.cc.ie.parametrics.CostDriverValue;
import es.uah.cc.ie.parametrics.CostEstimatingRelationship;
import java.util.List;


/**
 *
 * @author Miguel-Angel Sicilia
 */
public class SimpleSingleNonLinearRegressionCER extends CostEstimatingRelationship {

     private ExponentialFunction _model;
     private double[] _modelParams;

    public SimpleSingleNonLinearRegressionCER(String label,
                                           ExponentialFunction model,
                                           double[] params){
        super(label); _model= model; _modelParams = params;
    }
    
    /**
     *
     * @param instance The concrete case for which the estimation is desired.
     * @return An estimation of effort in man-months.
     */
    @Override
    public double estimate(List<CostDriverValue> instance) {
       assert(instance.size()==1);
       CostDriverValue cdv = (CostDriverValue)instance.get(0);
       double [] x = new double[1];
       x[0]= cdv.getValue();
       return _model.function(_modelParams, x);
    }

 }
